/** * $RCSfile$ * $Revision$ * $Date$ * * Copyright (C) 2004 Jive Software. All rights reserved. * * This software is published under the terms of the GNU Public License (GPL), * a copy of which is included in this distribution. */ package org.jivesoftware.net.policies; import org.jivesoftware.net.AcceptPolicy; import org.jivesoftware.net.Connection; import org.jivesoftware.net.AcceptPolicy; /** * Performs a bitwise logical XOR (exclusive OR) evaluation on * child policies (e.g. if both policies evaluate to true or false * the XOR result is false).<p> * * This policy is useful for combining simpler policies to create * complex policy decisions. The comparison is done using the bitwise * XOR operation so both policies will always be evaluated. * * @author Iain Shigeoka */ public class XorPolicy implements AcceptPolicy { private AcceptPolicy policy1; private AcceptPolicy policy2; /** * Create an AND policy with the given two child policies. * * @param firstPolicy The first policy that will be evaluated * @param secondPolicy The first policy that will be evaluated */ public XorPolicy(AcceptPolicy firstPolicy, AcceptPolicy secondPolicy){ policy1 = firstPolicy; policy2 = secondPolicy; } public boolean evaluate(Connection connection) { return policy1.evaluate(connection) ^ policy2.evaluate(connection); } }